Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd30b02bdf3dbd8b…

MALICIOUS

PDF

35.5 KB Created: 2021-07-01 18:08:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 293d963d6fad4b330f9826d10bd7c96b SHA-1: 648c7323876f55bdbdcbda5d1497968381b89445 SHA-256: dd30b02bdf3dbd8bb1f8acf0bebd24a770baade0303338a95d12641cf2e7dd55
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple external links, including one to 'netcdn.co' which is flagged as a redirector for game hacks. The document body and heuristics indicate a lure for free game items, likely to drive traffic to a link farm or SEO manipulation site. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/free-roblox-avatar-items-game-hack PDF link annotation
    • https://amozeshportal.ir/assets/uploads/pages/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/pubg-uc-pakistan_GM1330123889.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-hack-no-human-verification-pc_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/theme-park-tycoon-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-can-you-get-free-robuxs_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/very-very-easy-hack-roblox_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-robux-hack-february-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-freebies-robux-roblox-hack_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000329c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329C 22648 bytes
SHA-256: d3c2d476a0ddab8224bcf3a519dc55caa33d4f11b94b156b24e3d4355a97527e
font_01_sfnt_off00006565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6565 19128 bytes
SHA-256: d2a21adbf61486a37be810c99dd1e1cd760ba0b5ab321b507830e859780cf359